# How Long Would You Live if You Could Choose ANY Number of Years?

Here’s how it works. You wake up and find yourself alone in a room. The only things in the room are a table, a chair, a calculator, and a note. The note says:

You have exactly 10 minutes to choose how many years you want to live and type the number into the calculator. At the end of the 10 minutes, you’ll be escorted out of the room, and your decision is permanent and unable to ever be changed. You’ll live for exactly that many years and then you’ll die. Oh also…every other human on Earth is currently in a room just like this making the same exact decision and you won’t know what they chose until you leave the room. If you enter no number into the calculator, your life will go on exactly as it had before, unaffected—you’ll die a natural death whenever you would have if this had never happened.

Other information in the note’s fine print:

• There’s an infinity button on the calculator, and there are endless digit spots.
• If you enter a number younger than your current age, the calculator rejects it and it stays blank.
• If you enter your current age, you’ll die the moment the 10 minutes is up.
• You can choose the age of your body and change it at any time—that means if you’re 40 right now you can choose to go back to 25 and live out a bunch of years in your 25-year-old body, then let yourself age up to 70 over the next 45 years, do that for a while, then bring yourself back down to 35 for a while, etc. (The point here is to take body age out of the question.)
• In the case of children under the age of 12, one of the parents (which one is chosen at random) will make the decision for them, on an additional calculator that’ll be on that parent’s table with the child’s name on it. Children 12 and over will wake up in their own room with their own decision to make.
• Sickness and ailments don’t happen anymore for anyone who enters a number into the calculator. People who leave it blank will get sick as they would have in their normal life.
• People who enter a number in the calculator will no longer be able to reproduce—any children they already have (including existing pregnancies) can live on, but they can’t conceive any more children. People who leave the calculator blank can continue to have children, but those children won’t ever be given a chance to choose an age—they will be normal mortal people who will live and die naturally, as will their children, and so on.
• This opportunity will never come along again—it’s a one and only one time thing.
• No other guarantees about anything—if you enter a number into the calculator, you will continue to live a conscious existence until your birthday that year, and then you’ll peacefully die that day. Sickness and ailments won’t occur, but discomfort, pain, and suffering still can—i.e. if you’re living a comfortable life on Earth, you’ll have general good health at all times and any ailments or injuries will be healed immediately, but if you tried to free dive to the bottom of the ocean, while you won’t die, you’d experience horrible pain and suffering as if you were drowning. If you don’t eat or drink, you won’t die, but you’ll feel completely desperate for food and water like a normal person would.
• You’re told on the note that death is final and eternal, whether you enter something into the calculator or not.

That’s all that’s on the note. If there are any other confusion or questions, you’d have to make the decision with certain things not clarified.

Note: Try answering the question yourself before you read my or other readers’ answers. The true challenge is to figure out what you’d do without knowing anything about anyone else’s thinking.

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Tim’s Answer: I came up with this thought experiment during my genie question interviews when trying to figure out if I’d use one of my wishes on eternal life or some kind of extended life. To me, this is an incredibly hard question.

On one hand, I don’t want to put in too few years, which could lead to serious regrets—what if I put in like 150 years, and then I come out and most of my friends and family have put in thousands? Then one day, I’m 148 years old, everyone I know is living and thriving and everyone’s acting weird around me because of the sad fact that I’m disappearing in two years. Would that prevent them from wanting to invest in their relationship with me and get closer when they know it’s going to end in pain, while their other relationships have no end in sight? This could happen on a larger scale too—what if I put in 50,000 years and most people I know put in many millions? The heartbreak we feel about death after only a few decades must be magnified to a huge extreme after getting used to living for so many years—and we have no idea what a 50,000 year relationship or friendship would even be like and how heartbreaking losing someone would be after knowing them for so long. (People would probably end up becoming close only with other people who had chosen similar lifespans, for that reason.)

On the other hand, putting in too many years could be very upsetting. What if I put in 10 million years, and everyone I know put in 1,000 or less? 10 million years is ten thousand millennia. What would I do if I realize after 300 years that I don’t want to live anymore and I can’t even imagine getting through one millennium, and I have to get through 10,000 of them? But we’re so scared of death—wouldn’t I want to live a long, long time if I could? 10 million years still means I’ll be dead for most of eternity—it’s just extending my moment of life to be far more substantial.

What would happen if life on Earth became unsustainable and there were no Chris Nolan to put other potential livable worlds nicely within our reach? If you can’t die, you might end up living millions of years of horrible suffering, waiting for that moment of death to finally come. Or worse, what if at some point, on some space expedition, something goes wrong and your body gets flung out into space, and without being able to die, you float alone into nothingness for millions of years (or billions, or trillions, depending on the number you chose), with only your consciousness to keep you company? Death is scary, but there’s a ceiling on how scary things can get because of death. The kind of fear an immortal person would experience dwarfs any fear a mortal human could ever know.

But the kind of hope, purpose, and happiness an immortal person could feel might dwarf that of a normal human by just as much. What if, with enough time, humans were able to create a safe and blissful utopia to live in, with everyone monitored so nothing really bad can happen, and you were surrounded by people you love? With all that time, maybe instead of having a handful of close friends, maybe you have thousands? Humans might be able to create an actual heaven to live in. Then, wouldn’t you be so happy you chose a really big number?

And if you decided to go the long life route, and you type in 1-0-0-0…-0……-0 and so on, where do you stop? Each zero changes things dramatically. Is there a chance you’d just freak out and start typing zeros really quickly and type a ton of them? What if you come out of the room and you’re now gonna live for a trillion times a trillion times a trillion years? If you did that, you’d have to cope with the question mark of what the universe actually is and what its fate is—that would suddenly be highly relevant to you.

Lot to think about in only ten precious minutes.

So what would I do? Well I wouldn’t have the guts to put in a really big number. Just too scary. But I would most certainly extend my current life by quite a bit. I’d put in at least 1,000 years—this one century we all get to live goes by pretty quickly, and knocking out nine more would be really fun. But how about 1,000 vs. 5,000, vs. 10,000 vs. 20,000 vs. 50,000? Ugh.

I’d probably type in 50,000 and then in the last few seconds delete a zero to make it 5,000 and then have my finger quivering on the zero button as the final seconds ticked down and end up not hitting it and leave the room with 5,000 years on my hands. So 5,000. Then I’d get my phone out and text everyone immediately to see what they did, and really really hope people chose something similar to me.

Okay, now you’re up. You have 10 minutes and the clock’s ticking…

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